Kev Siv Thiab Engineering Ntawm Polycarboxylate Superplasticizer Niam Cawv

Kev siv thiab Engineering ntawm Polycarboxylate Superplasticizer Niam Cawv

Polycarboxylate superplasticizer niam cawv yog cov khoom siv ua haujlwm siab uas tuaj yeem txo cov dej haus thiab txhim kho kev ua haujlwm thiab ua haujlwm ntev ntawm cov pob zeb. Nws lub ntsiab tivthaiv yog cov dej-soluble polymer nrog carboxyl pawg, uas tuaj yeem adsorb thiab disperse cov cement hais nyob rau hauv cov pob zeb sib tov, yog li txo cov dej-rau-cement ratio thiab ua kom lub fluidity ntawm cov sib tov.

Kev siv:

Niam cawv yuav tsum tau muab ntxiv rau hauv qhov sib xyaw ua ke hauv qhov tsim nyog raws li kev tsim qauv. Feem ntau, qhov pom zoo npaum li cas yog {{0}}.2 feem pua ​​​​rau 0.5 feem pua ​​​​ntawm cov khoom siv cementitious. Qhov koob tshuaj tiag tiag yuav tsum tau hloov kho raws li cov xwm txheej tshwj xeeb xws li hom cement, aggregate, thiab qhov xav tau lub zog thiab kev ua haujlwm ntawm cov pob zeb.

Engineering:

1. Kev sib xyaw: Niam cawv yuav tsum muab ntxiv rau hauv cov dej sib tov ua ntej, thiab tom qab ntawd nplawm rau 2-3 feeb kom txog thaum nws tawg tag. Tom qab ntawd, cov cement, aggregates, thiab lwm yam yuav tsum tau ntxiv thiab sib tov raws li tus txheej txheem txheej txheem.

2. Kev tswj kev noj ntau npaum li cas: qhov ntau npaum li cas ntawm niam cawv yuav tsum tau tswj kom raug los ntawm kev siv lub twj tso kua mis los yog lub ntsuas dej ntws. Lub sijhawm ntxiv thiab lub sijhawm sib xyaw yuav tsum ua raws li cov qauv tsim.

3. Compatibility test: Ua ntej yuav siv cov niam cawv, yuav tsum tau ua ib qho kev ntsuam xyuas compatibility kom paub tseeb tias nws yog sib xws nrog rau lwm yam admixtures xws li air-entraining agent, retarder, thiab accelerator.

4. Cia: Niam cawv yuav tsum muab khaws cia rau hauv qhov chaw qhuav thiab qhov cua, kom deb ntawm tshav ntuj thiab tshav kub. Qhov kub cia yuav tsum nyob nruab nrab ntawm 0 degree thiab 40 degree . Lub sijhawm khaws cia yuav tsum tsis pub tshaj 12 lub hlis.

Hauv cov ntsiab lus, kev siv thiab kev tsim vaj tsev ntawm polycarboxylate superplasticizer niam cawv tuaj yeem txhim kho qhov zoo thiab kev ua tau zoo ntawm cov pob zeb, txo tus nqi ntawm kev tsim vaj tsev, thiab txhawb kev tsim kho kom ruaj khov ntawm kev tsim kho kev lag luam.